\E*lec`tro-neg"a*tive\, a. (Chem. & Physics)
(a) Having the property of being attracted by an
    electro-positive body, or a tendency to pass to the
    positive pole in electrolysis, by the law that opposite
    electricities attract each other.
(b) Negative; nonmetallic; acid; -- opposed to positive,
    metallic, or basic.

\E*lec`tro-neg"a*tive\, n. (Chem. & Physics)
A body which passes to the positive pole in electrolysis.